It’s an interesting one. I have dozens of thumb and finger picks purchased over the years, all brands and some unbranded picked up on my travels. I sometimes get the notion to try something different, out comes a bar, on go different picks and it usually lasts one session before I go back to my trusted setup, the only change I have made is using a Bens Bar, I know it’s down to personal choice but his bar does it for me.
Ron Elliot introduced me to Zookie thumb picks as they are angled either 10/20 degrees. They strike the strings at the correct angle for me. Made by Dunlop. Have several bars but favour Dave Wheelhouse’s bar.
Sheffield SD10, Quilter Mach 3 with Celestion bn-300s, , Telonics Multi taper, Zoom MS70, Peterson Strobostomp. .
What Derek says, Zookies are great, tried all angles, settled for the 20’s, really comfortable.
MSA Millennium SD1O, GK MB200,Sica 12 and Telonics 15 speakers , Joyo American Sound pre amp, Jay Ganz Straight Ahead 500w class D Amp, Hilton pedal, Peterson tuners,Digitech RP150,Scott Dixon seat/ flight case.
The worst thumb pick I ever bought was a "Jeff Newman" It appeared to be laminated and after a very short while it broke. I have never broken a thumb pick before or after. I have been using a Fred Kelly speed pick for a long time and am very pleased with it.